Lowband apply question for the Transmission Gurus

Hi Folks,

Any of you transmission gurus know if lowband applied can be added to a manual valvebody that does not currently have one? My Duster's has a 727 with a reverse manual valve body that does not appear to have the lowband apply. I don't down shift to first when moving, no burnouts in 1st etc. She shifts great and launches nicely, but for since I will be doing more cruising than 1/4 mile runs these days, I think I want that piece of mind when cruising around and have the best of both worlds. Jusy wondering if I need to start saving up for a new manual valvebody. Any input you may have is appreciated.

Thanks all,
Pat